A:
Positive:
1 x 206202855 x 41240577 x 294575535 x 58915137 x 557305185 x 111461259 x 796151295 x 15923
Negative:
-1 x -20620285-5 x -4124057-7 x -2945755-35 x -589151-37 x -557305-185 x -111461-259 x -79615-1295 x -15923
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 20,620,285, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 20,620,285 | |
| -1 | -20,620,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,620,285.
Example:
1 x 20,620,285 = 20,620,285
and
-1 x -20,620,285 = 20,620,285
Notice both answers equal 20,620,285
With that explanation out of the way, let's continue. Next, we take the number 20,620,285 and divide it by 2:
20,620,285 ÷ 2 = 10,310,142.5
If the quotient is a whole number, then 2 and 10,310,142.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,620,285 | |
| -1 | -20,620,285 |
Now, we try dividing 20,620,285 by 3:
20,620,285 ÷ 3 = 6,873,428.3333
If the quotient is a whole number, then 3 and 6,873,428.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,620,285 | |
| -1 | -20,620,285 |
Let's try dividing by 4:
20,620,285 ÷ 4 = 5,155,071.25
If the quotient is a whole number, then 4 and 5,155,071.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,620,285 | |
| -1 | 20,620,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 37 | 185 | 259 | 1,295 | 15,923 | 79,615 | 111,461 | 557,305 | 589,151 | 2,945,755 | 4,124,057 | 20,620,285 |
| -1 | -5 | -7 | -35 | -37 | -185 | -259 | -1,295 | -15,923 | -79,615 | -111,461 | -557,305 | -589,151 | -2,945,755 | -4,124,057 | -20,620,285 |
Here are some more numbers to try:
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